Come on. It is understandable. It happened many years ago. I wen

to a Muslim restaurant by chance. But I forgot the meaning of these two Chinese words. I asked why there is no pork.  I asked why there is no pork 2 or 3 times. Suddenly I realized why.  I felt bad about it.

By the way, I still like to keep 罄竹难书 in my first post.